I am in a deep puzzle and require urgent help! 
I know in normal circumstances there is no exception. 

But I am a little puzzled regarding the following exception: §51 subsection (2) 

"The permanent settlement permit of a foreigner who has lawfully resided in the federal territory for at least 15 years, and the permanent settlement permit of his or her cohabiting spouse do not expire pursuant to subsection (1) nos. 6 and 7 if their subsistence is secure and there is no public interest in expelling the foreigner pursuant to section 54 (1) nos. 2 to 5 or (2) nos. 5 to 7. The permanent settlement permit of a foreigner cohabiting with a German spouse does not expire pursuant to subsection (1) nos. 6 and 7 if there is no public interest in expelling the foreigner pursuant to section 54 (1) nos. 2 to 5 or (2) nos. 5 to 7. On request, the foreigners authority at the place of the foreigner’s last habitual residence issues a certificate confirming the continued validity of the permanent settlement perm permit it."

I am a resident since 2004 and have niederlassungserlaubnes. 
I am a little scared if this exception is applicable for me. 

Otherwise will have to fly before 13.02 i.e. this Saturday. 

I will really appreciate any valuable feedback! 

Thank you! 

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